Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese PatentApplication Ser. No. 201710975239.4 and Ser. No. 201710975242.6 filed onOct. 19, 2017, the entire content of which is incorporated herein byreference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera optical lens suitable for handheld devices such as smart phonesand digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor),and as the progress of the semiconductor manufacturing technology makesthe pixel size of the photosensitive devices shrink, coupled with thecurrent development trend of electronic products being that theirfunctions should be better and their shape should be thin and small,miniature camera lens with good imaging quality therefor has become amainstream in the market. In order to obtain better imaging quality, thelens that is traditionally equipped in mobile phone cameras adopts athree-piece or four-piece lens structure. And, with the development oftechnology and the increase of the diverse demands of users, and underthis circumstances that the pixel area of photosensitive devices isshrinking steadily and the requirement of the system for the imagingquality is improving constantly, the five-piece, six-piece andseven-piece lens structure gradually appear in lens design. There is anurgent need for ultra-thin wide-angle camera lenses which have goodoptical characteristics and the chromatic aberration of which is fullycorrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordancewith a first embodiment of the present invention;

FIG. 2 shows the axial aberration of the camera optical lens shown inFIG. 1;

FIG. 3 shows the ratio chromatic aberration of the camera optical lensshown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature anddistortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordancewith a second embodiment of the present invention;

FIG. 6 presents the axial aberration of the camera optical lens shown inFIG. 5;

FIG. 7 presents the ratio chromatic aberration of the camera opticallens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera opticallens shown in FIG. 5

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

Embodiment 1

Referring to FIG. 1, the present disclosure provides a camera opticallens 10 in accordance with a first exemplary embodiment. The cameraoptical lens 10 comprises 7 lenses. Concretely, from an object side toan image side, the camera optical lens 10 comprises in sequence: anaperture S1, a first lens L1, a second lens L2, a third lens L3, afourth lens L4, a fifth lens L5, a sixth lens L6 and a seventh lens L7.Optical elements including optical filters GF can be arranged betweenthe seventh lens L7 and the image surface Si. The first lens L1 is madeof glass material, the second lens L2 is made of plastic material, thethird lens L3 is made of plastic material, the fourth lens L4 is made ofplastic material, the fifth lens L5 is made of plastic material, thesixth lens L6 is made of plastic material, the seventh lens L7 is madeof plastic material.

Here, the focal length of the whole optical camera lens is defined as f,the focal length of the first lens L1 is defined as f1, the focal lengthof the third lens L3 is defined as f3, the focal length of the fourthlens L4 is defined as f4, the refractive power of the first lens L1 isdefined as n1, the thickness on-axis of the first lens L1 is defined asd1, the total optical length of the camera optical lens is defined asTTL, the curvature radius of the seventh lens L7 at the object sidesurface is defined as R13, the curvature radius of the seventh lens L7at the image side surface is defined as R14. The f, f1, f3, f4, n4, d7,TTL, R13 and R14 satisfy the following conditions: 1≤f1/f≤1.5,1.7≤n1≤2.2, −2≤f3/f4≤2; −10≤(R13+R14)/(R13−R14)≤10; 0.01≤d1/TTL≤0.05.

Condition 1≤f1/f≤1.5 fixes the positive refractive power of the firstlens L1. If the lower limit of the set value is exceeded, although itbenefits the development of ultra-thin lenses, but the positiverefractive power of the first lens L1 will be too strong, problems likeaberration are difficult to be corrected, and it is also unfavorable forthe development of wide-angle lens. On the contrary, if the higher limitof the set value is exceeded, the positive refractive power of the firstlens L1 will become too weak, it is then difficult to develop ultra-thinlenses. Preferably, the following condition shall be satisfied,1≤f1/f≤1.1.

Condition 1.7≤n≤2.2 fixes the refractive power of the first lens L1, arefractive power within this range benefits the development ofultra-thin lenses, and it also benefits the correction of aberration.Preferably, the following condition shall be satisfied, 1.7≤n1≤1.8.

Condition −2≤f3/f4≤2 fixes the ratio between the focal length f3 of thethird lens L3 and the focal length f4 of the fourth lens L4, a ratiowithin this range can effectively reduce the sensitivity of the cameraoptical lenses group and further enhance the imaging quality.Preferably, the following condition shall be satisfied,−1.8≤f3/f4≤−0.75.

Condition −10≤(R13+R14)/(R13−R14)≤10 fixes the shape of the seventh lensL7, a value beyond this range, with the development into the directionof ultra-thin and wide-angle lenses, problems like aberration of theoff-axis picture angle are difficult to be corrected. Preferably, thefollowing condition shall be satisfied, 0≤(R13+R14)/(R13−R14)≤2.

Condition 0.01≤d1/TTL≤0.055 fixes the ratio between the thicknesson-axis of the first lens L1 and the total optical length TTL of thecamera optical lens 10, a ratio within this range benefits thedevelopment of ultra-thin lenses.

When the focal length of the camera optical lens 10 of the presentinvention, the focal lengths of all lenses, the refractive power of therelated lenses, the total optical length, the thickness on-axis and thecurvature radius of the camera optical lens satisfy the aboveconditions, the camera optical lens 10 has the advantage of highperformance and satisfies the design requirement of low TTL.

In this embodiment, the object side surface of the first lens L1 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a positiverefractive power; the focal length of the whole optical camera lens isf, the focal length of the first lens L1 f1, the curvature radius of thefirst lens L1 at the object side surface R1, the curvature radius of thefirst lens L1 at the image side surface R2 and the thickness on-axis ofthe first lens L1 d1 satisfy the following condition:−3.83≤(R1+R2)/(R1−R2)≤−1.27, this condition reasonably controls theshape of the first lens, then the first lens system can effectivelycorrect the spherical aberration of the system; 0.13≤d1≤0.38, satisfyingthis condition is conducive to the realization of ultra-thin lens.Preferably, the following conditions shall be satisfied,−2.39≤(R1+R2)/(R1−R2)≤−1.59; 0.2≤d1≤0.3.

In this embodiment, the object side surface of the second lens L2 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the second lens L2 f2, the curvature radius ofthe second lens L2 at the object side surface R3, the curvature radiusof the second lens L2 at the image side surface R4 and the thicknesson-axis of the second lens L2 d3 satisfy the following condition:−5.26≤f2/f≤−1.57, this condition controls the negative refractive powerof the second lens L2 within the reasonable scope, the sphericalaberration caused by the first lens L1 which has positive refractivepower and the field curvature of the system then can be reasonably andeffectively balanced; the condition 1.2≤(R3+R4)/(R3−R4)≤3.83 fixes theshape of the second lens L2, a value beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lenses, theproblem of on-axis chromatic aberration is difficult to be corrected;0.12≤d3≤0.39, satisfying this condition is conducive to the realizationof ultra-thin lenses. Preferably, the following conditions shall besatisfied, −3.29≤f2/f≤−1.97; 1.91≤(R3+R4)/(R3−R4)≤3.06; 0.19≤d3≤0.31.

In this embodiment, the object side surface of the third lens L3 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the third lens L3 f3, the curvature radius ofthe third lens L3 at the object side surface R5, the curvature radius ofthe third lens L3 at the image side surface R6 and the thickness on-axisof the third lens L3 d5 satisfy the conditions: −5.03≤f3/f≤−1.49,−5.03≤f3/f≤−1.49, satisfying this condition is helpful for the system toobtain good ability in balancing the field curvature, so that the imagequality can be effectively improved; the condition−2.59≤(R5+R6)/(R5−R6)≤−0.84 can effectively control the shape of thethird lens L3, which is beneficial to the shaping of the third lens L3and avoids bad shaping and stress generation due to the large surfacecurvature of the third lens l3; 0.10≤d5≤0.32, satisfying this conditionis conducive to the realization of ultra-thin lenses. Preferably, thefollowing conditions shall be satisfied, −3.14≤f3/f4−1.87;−1.62≤(R5+R6)/(R5−R6)≤−1.05; 0.16≤d5≤0.25.

In this embodiment, the object side surface of the fourth lens L4 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a positiverefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the fourth lens L4 f4, the curvature radius ofthe fourth lens L4 at the object side surface R7, the curvature radiusof the fourth lens L4 at the image side surface R8 and the thicknesson-axis of the fourth lens L4 d7 satisfy the condition: 0.78≤f4/f≤3.45,which, through the reasonable distribution of light intensity, makes itpossible that the system has better imaging quality and lowersensitivity; the condition −1.48≤(R7+R8)/(R7−R8)≤−0.13 fixes the shapeof the fourth lens L4, a value beyond this range, with the developmentinto the direction of ultra-thin and wide-angle lenses, the problem ofoff-axis chromatic aberration is difficult to be corrected;0.28≤d7≤0.83, satisfying this condition is conducive to the realizationof ultra-thin lenses. Preferably, the following conditions shall besatisfied, 1.25≤f4/f≤2.76; −0.92≤(R7+R8)/(R7−R8)≤−0.16; 0.44≤d7≤0.66.

In this embodiment, the object side surface of the fifth lens L5 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a positiverefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the fifth lens L5 f5, the curvature radius ofthe fifth lens L5 at the object side surface R9, the curvature radius ofthe fifth lens L5 at the image side surface R10 and the thicknesson-axis of the fifth lens L5 d9 satisfy the conditions: 1.67≤f5/f≤9.4,the limitation puts on the fifth lens L5 can effectively make the lightangle of the camera lens flat and reduce the tolerance sensitivity; thecondition −4.48≤(R9+R10)/(R9−R10)≤−1.1 fixes the shape of the fifth lensL5, a value beyond this range, with the development into the directionof ultra-thin and wide-angle lenses, the problem of off-axis chromaticaberration is difficult to be corrected; 0.24≤d9≤0.72, satisfying thiscondition is conducive to the realization of ultra-thin lenses.Preferably, the following conditions shall be satisfied, 2.68≤f5/f≤7.52;−2.8≤(R9+R10)/(R9−R10)≤−1.37; 0.38≤d9≤0.58.

In this embodiment, the object side surface of the sixth lens L6 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a positiverefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the sixth lens L6 f6, the curvature radius ofthe sixth lens L6 at the object side surface R11, the curvature radiusof the sixth lens L6 at the image side surface R12 and the thickness onthe axis of the sixth lens L6 d11 satisfy the condition: 0.75≤f6/f≤2.39,which, through the reasonable distribution of light intensity, makes itpossible that the system has better imaging quality and lowersensitivity; the condition −5.16≤(R11+R12)/(R11−R12)≤−1.7 fixes theshape of the sixth lens L6, a value beyond this range, with thedevelopment into the direction of ultra-thin and wide-angle lenses, theproblem of off-axis chromatic aberration is difficult to be corrected;0.19≤d11≤0.59, satisfying this condition is conducive to the realizationof ultra-thin lenses. Preferably, the following conditions shall besatisfied, 1.2≤f6/f≤1.91; −3.22≤(R11+R12)/(R11−R12)≤−2.13; 0.3≤d11≤0.48.

In this embodiment, the object side surface of the seventh lens L7 is aconvex surface relative to the proximal axis, its image side surface isa concave surface relative to the proximal axis, and it has a negativerefractive power; the focal length of the whole optical camera lens 10is f, the focal length of the seventh lens L7 f7 and the thicknesson-axis of the seventh lens L7 d13 satisfy the conditions:−1.68≤f7/f≤−0.5, which, through the reasonable distribution of lightintensity, makes it possible that the system has better imaging qualityand lower sensitivity; 0.14≤d13≤0.42, satisfying this condition isconducive to the realization of ultra-thin lenses. Preferably, thefollowing conditions shall be satisfied, −1.05≤f7/f≤−0.62;0.22≤d13≤0.34.

In this embodiment, the total optical length TTL of the camera opticallens 10 is less than or equal to 5.4 millimeter, which is conducive tothe realization of ultra-thin lenses. Preferably, the total opticallength TTL of the camera optical lens 10 is less than or equal to 5.16.

In this embodiment, the aperture F number of the camera optical lens 10is less than or equal to 2.06. A large aperture has better imagingperformance. Preferably, the aperture F number of the camera opticallens 10 is less than or equal to 2.02.

Such a design is able to make the total optical length TTL of the wholecamera optical lens 10 as short as possible, thus the miniaturizationcharacteristics can be maintained.

In the following, an example will be used to describe the camera opticallens 10 of the present invention. The symbols recorded in each exampleare as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surfaceto the image side surface of the first lens L1).

Preferably, inflexion points and/or arrest points can also be arrangedon the object side surface and/or image side surface of the lens, sothat the demand for high quality imaging can be satisfied, for theconcrete embodiment, refer to the description below.

The design information of the camera optical lens 10 according to thefirst embodiment of the present invention is shown in the following, theunit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the firstembodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd ν d S1 ∞ d0= −0.200 R1 2.049 d1= 0.250 nd1 1.7250 ν 156.10 R2 6.567 d2= 0.223 R3 8.651 d3= 0.236 nd2 1.6450 ν 2 22.44 R43.548 d4= 0.316 R5 −5.627 d5= 0.200 nd3 1.6450 ν 3 23.50 R6 −43.756 d6=0.038 R7 5.672 d7= 0.550 nd4 1.5440 ν 4 56.10 R8 −8.312 d8= 0.580 R98.393 d9= 0.480 nd5 1.5350 ν 5 56.10 R10 21.920 d10= 0.240 R11 2.014d11= 0.396 nd6 1.5350 ν 6 56.10 R12 4.563 d12= 0.496 R13 −6.144 d13=0.270 nd7 1.5350 ν g 56.10 R14 2.204 d14= 0.100 R15 ∞ d15= 0.210 ndg1.5160 ν g 64.16 R16 ∞ d16= 0.465

Where, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the first lens L1 on the object side;

R2: The curvature radius of the first lens L1 on the image side;

R3: The curvature radius of the second lens L2 on the object side;

R4: The curvature radius of the second lens L2 on the image side;

R5: The curvature radius of the third lens L3 on the object side;

R6: The curvature radius of the third lens L3 on the image side;

R7: The curvature radius of the fourth lens L4 on the object side;

R8: The curvature radius of the fourth lens L4 on the image side;

R9: The curvature radius of the fifth lens L5 on the object side;

R10: The curvature radius of the fifth lens L5 on the image side;

R11: The curvature radius of the sixth lens L6 on the object side;

R12: The curvature radius of the sixth lens L6 on the image side;

R13: The curvature radius of the seventh lens L7 on the object side;

R14: The curvature radius of the seventh lens L7 on the image side;

R15: The curvature radius of the optical filter GF on the object side;

R16: The curvature radius of the optical filter GF on the image side;

d: The distance on-axis between the thickness on-axis of the lens andthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the seventh lens L7;

d13: The thickness on-axis of the seventh lens L7;

d14: The distance on-axis from the image side surface of the seventhlens L7 to the object side surface of the optical filter GF;

d15: The thickness on-axis of the optical filter GF;

d16: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the seventh lens L7;

ndg: The refractive power of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the seventh lens L7;

vg: The abbe number of the optical filter GF;

Table 2 shows the aspherical surface data of the camera optical lens 10in the embodiment 1 of the present invention.

TABLE 2 Conic index Aspherical surface index k A4 A6 A8 A10 A12 A14 A16R1 −2.8646E−01  7.5536E−03 2.5725E−03  1.0962E−04  1.7813E−02−3.9834E−02  4.0453E−02 −1.6123E−02 R2 −1.5622E+00 −1.3578E−026.5241E−03  1.9124E−02 −4.1164E−02  4.8501E−02 −3.0241E−02  6.7255E−03R3  6.6441E+01 −6.7514E−02 4.8807E−02  4.4343E−02 −1.5379E−01 2.0444E−01 −1.5018E−01  4.8182E−02 R4 −2.9989E+01  2.5879E−02−6.6482E−02   2.0644E−01 −4.3424E−01  5.7199E−01 −4.5016E−01  1.4667E−01R5  1.9947E+01 −9.8166E−02 −9.8993E−02   1.3412E−01 −7.0964E−02−5.0935E−02  6.5289E−02 −2.5562E−02 R6 −9.0000E+01 −1.1086E−016.0203E−02 −1.7958E−02  7.5596E−02 −1.6242E−01  1.4397E−01 −4.3299E−02R7  1.5529E+01 −1.0753E−01 1.5207E−01 −1.5270E−01  9.8412E−02−5.5577E−02  2.5642E−02 −5.2587E−03 R8 −7.0884E+01 −1.0181E−013.6373E−02 −1.2221E−02 −4.9693E−03  1.4911E−02 −1.2460E−02  3.9343E−03R9 −1.2709E+01 −8.0732E−02 2.3465E−02 −3.0632E−02  2.5703E−02−1.0518E−02  2.7583E−03 −3.8298E−04 R10  5.0756E+01 −1.8671E−019.6986E−02 −4.1056E−02  1.1593E−02 −3.8124E−04 −2.0982E−04 −9.4187E−06R11 −3.7068E+00 −7.7694E−02 −7.6904E−02   5.4646E−02 −3.9895E−03−1.2166E−02  5.1539E−03 −6.0784E−04 R12  2.8347E+00  5.2872E−02−2.2099E−01   1.8426E−01 −8.4385E−02  2.1939E−02 −2.9799E−03  1.6324E−04R13  6.6077E+00 −2.5193E−01 1.5927E−01 −3.8749E−02  1.6800E−03 1.1944E−03 −2.4312E−04  1.4575E−05 R14 −1.1994E+01 −1.6913E−011.1861E−01 −4.8441E−02  1.2200E−02 −1.8702E−03  1.5923E−04 −5.7741E−06

Where, K is conic index, A4, A6, A8, A10, A12, A14, A16 are asphericsurface indexes.

IH: Image height

y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1)

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (1). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (1).

Table 3 and table 4 show the inflexion points and the arrest pointdesign data of the camera optical lens 10 lens in embodiment 1 of thepresent invention. In which, R1 and R2 represent respectively the objectside surface and image side surface of the first lens L1, R3 and R4represent respectively the object side surface and image side surface ofthe second lens L2, R5 and R6 represent respectively the object sidesurface and image side surface of the third lens L3, R7 and R8 representrespectively the object side surface and image side surface of thefourth lens L4, R9 and R10 represent respectively the object sidesurface and image side surface of the fifth lens L5, R11 and R12represent respectively the object side surface and image side surface ofthe sixth lens L6, R13 and R14 represent respectively the object sidesurface and image side surface of the seventh lens L7. The data in the“inflexion point position” columns are the vertical distances from theinflexion points arranged for each lens surface to the optic axis of thecamera optical lens 10. The data in the “arrest point position” columnare the vertical distances from the arrest points arranged for each lenssurface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 0 R2 0 R3 0 R4 1 0.785 R5 0R6 1 0.895 R7 0 R8 1 1.175 R9 3 0.365 1.315 1.465 R10 2 0.145 1.245 R112 0.535 1.575 R12 2 0.595 1.665 R13 2 1.165 1.985 R14 1 0.435

TABLE 4 Arrest point number Arrest point position 1 R1 0 R2 0 R3 0 R4 0R5 0 R6 0 R7 0 R8 0 R9 1 0.625 R10 1 0.255 R11 1 0.925 R12 1 0.965 R13 0R14 1 1.005

FIG. 2 and FIG. 3 show the axial aberration and ratio chromaticaberration schematic diagrams after light with a wavelength of 470 nm,555 nm and 650 nm passes the camera optical lens 10 in the firstembodiment. FIG. 4 shows the field curvature and distortion schematicdiagrams after light with a wavelength of 470 nm passes the cameraoptical lens 10 in the first embodiment, the field curvature S in FIG. 4is a field curvature in the sagittal direction, T is a field curvaturein the meridian direction.

Table 9 shows the various values of the Embodiments 1, 2 and the valuescorresponding with the parameters which are already specified in thecondition expressions.

As shown in Table 9, the first embodiment satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2 mm, the full vision field image height is 2.934 mm, the visionfield angle in the diagonal direction is 72.04 degrees, it haswide-angle and is ultra-thin, its on-axis and off-axis chromaticaberrations are fully corrected, and it has excellent opticalcharacteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of itssymbols is the same as that of embodiment 1, in the following, only thedifferences are described.

Table 5 and table 6 show the design data of the camera optical lens 20in embodiment 2 of the present invention.

TABLE 5 R d nd ν d S1 ∞ d0= −0.200 R1 2.047 d1= 0.250 nd1 1.7250 ν 156.10 R2 6.531 d2= 0.196 R3 8.641 d3= 0.258 nd2 1.6450 ν 2 22.44 R43.774 d4= 0.361 R5 −5.119 d5= 0.212 nd3 1.6450 ν 3 23.50 R6 −45.416 d6=0.055 R7 5.760 d7= 0.550 nd4 1.5440 ν 4 56.10 R8 −38.204 d8= 0.380 R95.479 d9= 0.475 nd5 1.5350 ν 5 56.10 R10 22.357 d10= 0.291 R11 1.906d11= 0.372 nd6 1.5350 ν 6 56.10 R12 4.363 d12= 0.619 R13 −5.228 d13=0.280 nd7 1.5350 ν g 56.10 R14 2.815 d14= 0.412 R15 ∞ d15= 0.210 ndg1.5160 ν g 64.16 R16 ∞ d16= 0.200

Table 6 shows the aspherical surface data of each lens of the cameraoptical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherica1 Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −2.9045E−01  8.0730E−03 7.1686E−03 −1.6478E−02   5.2303E−02−7.9668E−02 6.3449E−02 −2.1899E−02 R2 −1.7452E+00 −1.4123E−02 1.0807E−028.6693E−03 −2.0118E−02  2.0215E−02 −1.1445E−02   1.7459E−03 R3 6.4328E+01 −6.1756E−02 5.1778E−02 4.4372E−03 −6.3623E−02  7.7420E−02−4.8846E−02   1.3927E−02 R4 −3.1649E+01  2.1120E−02 −3.4909E−02 9.2520E−02 −1.8667E−01  2.2479E−01 −1.7534E−01   5.9251E−02 R5 1.7739E+01 −1.0451E−01 −6.6128E−02  1.4019E−01 −1.9308E−01  1.7816E−01−1.0955E−01   2.9008E−02 R6  6.2810E+01 −1.0099E−01 4.4020E−023.0358E−02 −4.4512E−02  1.5995E−02 1.5864E−02 −8.9187E−03 R7  1.4831E+01−9.0747E−02 1.1158E−01 −1.0517E−01   6.4077E−02 −3.1628E−02 1.2707E−02−2.4319E−03 R8 −3.7394E+01 −1.0713E−01 4.6943E−02 −3.3142E−02  2.5177E−02 −1.3036E−02 2.6713E−03  2.5441E−04 R9 −5.7048E+00−8.5033E−02 3.6076E−02 −3.4016E−02   2.2784E−02 −7.5340E−03 1.6699E−03−2.2979E−04 R10  5.0841E+01 −1.7751E−01 1.1907E−01 −6.8339E−02  2.5171E−02 −4.1301E−03 3.9930E−04 −5.3840E−05 R11 −3.1047E+00−9.6856E−02 −3.0892E−02  3.1489E−02 −1.0578E−02 −2.6384E−03 2.1537E−03−2.9553E−04 R12  2.7785E+00  1.7413E−02 −1.4639E−01  1.2483E−01−6.2773E−02  1.8436E−02 −2.8081E−03   1.6975E−04 R13  4.7792E+00−1.4649E−01 3.9355E−02 1.8808E−02 −1.3805E−02  3.7462E−03 −4.8624E−04  2.4744E−05 R14 −5.2792E+00 −1.2821E−01 6.2436E−02 −2.0626E−02  4.7639E−03 −7.3669E−04 6.6594E−05 −2.6249E−06

Tables 7 and 8 show the inflexion point and arrest point design data ofeach lens of the camera optical lens 20 in embodiment 2 of the presentinvention.

TABLE 7 Inflexion point Inflexion point Inflexion point Inflexion pointnumber position 1 position 2 position 3 R1 0 R2 0 R3 0 R4 1 0.785 R5 0R6 1 0.875 R7 0 R8 1 1.125 R9 3 0.455 1.245 1.515 R10 2 0.155 1.245 R112 0.565 1.575 R12 2 0.615 1.585 R13 2 1.315 1.965 R14 1 0.515

TABLE 8 Arrest point Arrest point Arrest point number position 1position 2 R1 0 R2 0 R3 0 R4 0 R5 0 R6 1 1.095 R7 0 R8 0 R9 1 0.805 R102 0.255 1.565 R11 1 0.985 R12 1 1.005 R13 0 R14 1 1.075

FIG. 6 and FIG. 7 show the axial aberration and ratio chromaticaberration schematic diagrams after light with a wavelength of 470 nm,555 nm and 650 nm passes the camera optical lens 20 in the secondembodiment. FIG. 8 shows the field curvature and distortion schematicdiagrams after light with a wavelength of 470 nm passes the cameraoptical lens 20 in embodiment.

As shown in Table 9, the second embodiment 2 satisfies the variousconditions.

In this embodiment, the pupil entering diameter of the camera opticallens is 2 mm, the full vision field image height is 2.934 mm, the visionfield angle in the diagonal direction is 71.47°, it has wide-angle andis ultra-thin, its on-axis and off-axis chromatic aberrations are fullycorrected, and it has excellent optical characteristics.

TABLE 9 Embodiment 1 Embodiment 2 f 3.994 4.000 f1 3.998 4.000 f2 −9.424−10.527 f3 −10.037 −8.969 f4 6.263 9.210 f5 25.018 13.385 f6 6.367 5.980f7 −2.987 −3.366 f3/f4 −1.603 −0.974 (R1 + R2)/(R1 − R2) −1.907 −1.913(R3 + R4)/(R3 − R4) 2.390 2.551 (R5 + R6)/(R5 − R6) −1.295 −1.254 (R7 +R8)/(R7 − R8) −0.189 −0.738 (R9 + R10)/(R9 − R10) −2.241 −1.649 (R11 +R12)/(R11 − R12) −2.580 −2.551 (R13 + R14)/(R13 − R14) 0.472 0.300 f1/f1.001 1.000 f2/f −2.360 −2.632 f3/f −2.513 −2.242 f4/f 1.568 2.303 f5/f6.264 3.346 f6/f 1.594 1.495 f7/f −0.748 −0.842 d1 0.250 0.250 d3 0.2360.258 d5 0.200 0.212 d7 0.550 0.550 d9 0.480 0.475 d11 0.396 0.372 d130.270 0.280 Fno 1.997 2.000 TTL 4.839 4.910 d1/TTL 0.052 0.051 n1 1.72501.7250 n2 1.6450 1.6450 n3 1.6450 1.6450 n4 1.5440 1.5440 n5 1.53501.5350 n6 1.5350 1.5350 n7 1.5350 1.5350

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera optical lens, in an order from an objectside to an image side, comprising: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, a sixth lens and a seventh lens;wherein the camera optical lens satisfying the following conditions:1≤f1/f≤1.5:1.7≤n1≤2.2;−2≤f3/f4≤2;−10≤(R13+R14)/(R13−R14)≤10;0.01≤d1/TTL≤0.055; where f: the focal length of the optical camera lens;f1: the focal length of the first lens; f3: the focal length of thethird lens; f4: the focal length of the fourth lens; n1: the refractivepower of the first lens; d1: the thickness on-axis of the first lens;TTL: the total optical length of the camera optical lens; R13: thecurvature radius of the seventh lens at an object side surface; R14: thecurvature radius of the seventh lens at an image side surface.
 2. Thecamera optical lens as described in claim 1, wherein the first lens ismade of glass material, the second lens is made of plastic material, thethird lens is made of plastic material, the fourth lens is made ofplastic material, the fifth lens is made of plastic material, the sixthlens is made of plastic material, and the seventh lens is made ofplastic material.
 3. The camera optical lens as described in claim 1,wherein the first lens has a positive refractive power with a convexobject side surface and a concave image side surface, and the cameraoptical lens satisfies the following conditions:−3.83≤(R1+R2)/(R1−R2)≤−1.27;0.13≤d1≤0.38; where R1: the curvature radius of the first lens at theobject side surface; R2: the curvature radius of the first lens at theimage side surface; d1: the thickness on-axis of the first lens.
 4. Thecamera optical lens as described in claim 1, wherein the second lens hasa negative refractive power with a convex object side surface and aconcave image side surface; and the camera optical lens furthersatisfies the following conditions:−5.26≤f2/f≤−1.57;1.2≤(R3+R4)/(R3−R4)≤3.83;0.12≤d3≤0.39 f: The focal length of the optical camera lens; f2: thefocal length of the second lens; R3: the curvature radius of the secondlens at the object side surface; R4: the curvature radius of the secondlens at the image side surface; d3: the thickness on-axis of the secondlens.
 5. The camera optical lens as described in claim 1, wherein thethird lens has a negative refractive power with a convex object sidesurface and a concave image side surface; and the camera optical lensfurther satisfies the following conditions:−5.03≤f3/f≤−1.49;−2.59≤(R5+R6)/(R5−R6)≤−0.84;0.10≤d5≤0.32; where f: the focal length of the optical camera lens; f3:the focal length of the third lens; R5: the curvature radius of thethird lens at the object side surface; R6: the curvature radius of thethird lens at the image side surface; d5: the thickness on-axis of thethird lens.
 6. The camera optical lens as described in claim 1, whereinthe fourth lens has a positive refractive power with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:0.78≤f4/f≤3.45;−1.48≤(R7+R8)/(R7−R8)≤−0.13;0.28≤d7≤0.83; where f: The focal length of the optical camera lens is f;f4: the focal length of the fourth lens; R7: the curvature radius of thefourth lens at the object side surface; R8: the curvature radius of thefourth lens at the image side surface; d7: the thickness on-axis of thefourth lens.
 7. The camera optical lens as described in claim 1, whereinthe fifth lens has a positive refractive power, with a convex objectside surface and a concave image side surface; the camera optical lensfurther satisfies the following conditions:1.67≤f5/f≤9.4;−4.48≤(R9+R10)/(R9−R10)≤−1.1;0.24≤d9≤0.72; where f: the focal length of the optical camera lens; f5:the focal length of the fifth lens is f5; R9: the curvature radius ofthe fifth lens at the object side surface; R10: the curvature radius ofthe fifth lens at the image side surface; d9: the thickness on-axis ofthe fifth lens.
 8. The camera optical lens as described in claim 1,wherein the sixth lens has a positive refractive power with a convexobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:0.75≤f6/f≤2.39;−5.16≤(R11+R12)/(R11−R12)≤−1.7;0.19≤d11≤0.59; where f: the focal length of the optical camera lens; f6:the focal length of the sixth lens is f6; R11: the curvature radius ofthe sixth lens at the object side surface; R12: the curvature radius ofthe sixth lens at the image side surface; d11: the thickness on-axis ofthe sixth lens.
 9. The camera optical lens as described in claim 1,wherein the seventh lens has a negative refractive power with a convexobject side surface and a concave image side surface; the camera opticallens further satisfies the following conditions:−1.68≤f7/f≤−0.5;0.14≤d13≤0.42; where f: the focal length of the optical camera lens; f7:the focal length of the seventh lens; d13: the thickness on-axis of theseventh lens.
 10. The camera optical lens as described in claim 1,wherein the total optical length TTL of the camera optical lens is lessthan or equal to 5.4 millimeters.
 11. The camera optical lens asdescribed in claim 1, wherein an aperture F number of the camera opticallens is less than or equal to 2.06.